14 citations · 14 across the 1 of their papers we have counts for
3 papers
cond-mat.str-el2006★ 14 cited
Competing ground states of metal-halide ladders
Kei-ichi Funase, Shoji Yamamoto
Based on a symmetry argument, we investigate the ground-state properties of newly synthesized metal-halide ladder compounds (C_8_H_6_N_4_)[Pt(C_2_H_8_N_2_)X]_2_(ClO_4_)_4_ 2H_2_O (…
cond-mat.stat-mech2005
Fermionic versus bosonic descriptions of one-dimensional spin-gapped antiferromagnets
Shoji Yamamoto, Kei-ichi Funase
In terms of spinless fermions and spin waves, we describe magnetic properties of a spin-1/2 ferromagnetic-antiferromagnetic bond-alternating chain which behaves as a Haldane-gap an…
cond-mat.str-el2004
Effects of edges in spin-1/2 bond-alternating Heisenberg chains: Matrix-product variational approach
Kei-ichi Funase, Shoji Yamamoto
We make a matrix-product variational approach to spin-1/2 ferromagnetic-antiferromagnetic bond-alternating chains with anisotropy on their ferromagnetic bonds, especially under the…